If you are not concerned with the origionality of the car, you have two other options, both of them fairly drastic. The first is the MUST II conversion as to where you do away with the aprons and revert to four control arms, rack and disc. And the second is a strut retrofit (from a FOX Mustang) that will give you a rack and up to 13" front discs if you want to go that far.

How hard is it to bring in parts from the states to Chile? Simplicity would be the P/S box as you already have all of the power assist linkage.